[ ANALYSE STATIQUE DU COMPORTEMENT DES RESSORTS DES LOCOMOTIVES U22C ]
Volume 45, Issue 2, November 2019, Pages 131–137
M. R. B. Mutela Mutela1, P. Ngonga Sikisama2, and M. Lowa Osoko3
1 Faculté polytechnique, Université de Lubumbashi, RD Congo
2 Faculté polytechnique, Université de Lubumbashi, RD Congo
3 Faculté polytechnique, Université de Lubumbashi, RD Congo
Original language: French
Copyright © 2019 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This article is devoted to the analysis of the behavior of the suspension springs of the locomotives U22C of the National Railway Company of Congo (SNCC in abbreviation) which springs undergo repeated breaks, reducing the availability of the machines. Operation and causing a lot of purchase and maintenance cost as a replacement. Indeed, the locomotives U22C which is discussed in this article have total weight of; that is 18.3 tons per axle and 4575kg per wheel. Since their start-up, these locomotives know a lot of breaks of suspension springs and our first reflex was to check the behavior of the springs on the strength of materials to ensure their effectiveness before considering other tracks of research of the causes of the breaks. Both the theoretical calculations and the press tests have shown that the static load of these springs cannot cause these breaks, the stresses and the weakening of these springs under this load being lower than the admissible limit. This being the case, other avenues of research that are not part of this article will have to be considered in order to find the real cause and remedy of them quickly.
Author Keywords: Crushed length, index, tare, constant, weakening.
Volume 45, Issue 2, November 2019, Pages 131–137
M. R. B. Mutela Mutela1, P. Ngonga Sikisama2, and M. Lowa Osoko3
1 Faculté polytechnique, Université de Lubumbashi, RD Congo
2 Faculté polytechnique, Université de Lubumbashi, RD Congo
3 Faculté polytechnique, Université de Lubumbashi, RD Congo
Original language: French
Copyright © 2019 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
This article is devoted to the analysis of the behavior of the suspension springs of the locomotives U22C of the National Railway Company of Congo (SNCC in abbreviation) which springs undergo repeated breaks, reducing the availability of the machines. Operation and causing a lot of purchase and maintenance cost as a replacement. Indeed, the locomotives U22C which is discussed in this article have total weight of; that is 18.3 tons per axle and 4575kg per wheel. Since their start-up, these locomotives know a lot of breaks of suspension springs and our first reflex was to check the behavior of the springs on the strength of materials to ensure their effectiveness before considering other tracks of research of the causes of the breaks. Both the theoretical calculations and the press tests have shown that the static load of these springs cannot cause these breaks, the stresses and the weakening of these springs under this load being lower than the admissible limit. This being the case, other avenues of research that are not part of this article will have to be considered in order to find the real cause and remedy of them quickly.
Author Keywords: Crushed length, index, tare, constant, weakening.
Abstract: (french)
Cet article est consacré à l’analyse du comportement des ressorts de suspension des locomotives U 22 C de la Société Nationale des Chemins de Fer du Congo (SNCC, en sigle), lesquels ressorts subissent des cassures à répétition, réduisant la disponibilité des machines à l’exploitation et occasionnant beaucoup de frais d’achat et de maintenance en de remplacement. En effet, les locomotives U 22 dont est question dans cet article ont poids total de ; soit 18,3 Tonnes par essieu et 4575 Kg par roue. Depuis leur mise à l’exploitation, ces locomotives connaissent beaucoup des cassures des ressorts de suspension et notre premier réflexe était de vérifier le comportement ces ressorts sur le plan résistance des matériaux pour s’assurer de leur efficacité, avant d’envisager d’autres pistes de recherches des causes de ces cassures. Aussi bien les calculs théoriques et que les essais à la presse ont bien montré que la charge statique de ces ressorts ne peut pas occasionner ces cassures, les contraintes et l’affaiblissement de ces ressorts sous cette charge étant inférieures aux limites admissibles. Ceci étant, d’autres pistes de recherches ne faisant pas partie de cet article devront être envisagées pour trouver les véritables causes et y remédier rapidement.
Author Keywords: longueur écrasée, indice, tarer, constante, affaiblissement.
How to Cite this Article
M. R. B. Mutela Mutela, P. Ngonga Sikisama, and M. Lowa Osoko, “STATIC ANALYSIS OF THE BEHAVIOR OF LOCOMOTIVE SPRINGS U22C,” International Journal of Innovation and Scientific Research, vol. 45, no. 2, pp. 131–137, November 2019.
